/*
* Copyright (c) 2018 Sean Eric Fagan <sef@ixsystems.com>
* Portions Copyright (c) 2005-2011 Pawel Jakub Dawidek <pawel@dawidek.net>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* Portions of this file were taken from GELI's implementation of hmac.
*
* $FreeBSD$
*/
#ifndef _ZFS_FREEBSD_CRYPTO_H
#define _ZFS_FREEBSD_CRYPTO_H
#include <sys/errno.h>
#include <sys/mutex.h>
#include <opencrypto/cryptodev.h>
#include <crypto/sha2/sha256.h>
#include <crypto/sha2/sha512.h>
#define SUN_CKM_AES_CCM "CKM_AES_CCM"
#define SUN_CKM_AES_GCM "CKM_AES_GCM"
#define SUN_CKM_SHA512_HMAC "CKM_SHA512_HMAC"
#define CRYPTO_KEY_RAW 1
#define CRYPTO_BITS2BYTES(n) ((n) == 0 ? 0 : (((n) - 1) >> 3) + 1)
#define CRYPTO_BYTES2BITS(n) ((n) << 3)
struct zio_crypt_info;
typedef struct freebsd_crypt_session {
struct mtx fs_lock;
crypto_session_t fs_sid;
boolean_t fs_done;
} freebsd_crypt_session_t;
/*
* Unused types to minimize code differences.
*/
typedef void *crypto_mechanism_t;
typedef void *crypto_ctx_template_t;
/*
* Unlike the ICP crypto_key type, this only
* supports <data, length> (the equivalent of
* CRYPTO_KEY_RAW).
*/
typedef struct crypto_key {
int ck_format; /* Unused, but minimizes code diff */
void *ck_data;
size_t ck_length;
} crypto_key_t;
typedef struct hmac_ctx {
SHA512_CTX innerctx;
SHA512_CTX outerctx;
} *crypto_context_t;
/*
* The only algorithm ZFS uses for hashing is SHA512_HMAC.
*/
void crypto_mac(const crypto_key_t *key, const void *in_data,
size_t in_data_size, void *out_data, size_t out_data_size);
void crypto_mac_init(struct hmac_ctx *ctx, const crypto_key_t *key);
void crypto_mac_update(struct hmac_ctx *ctx, const void *data,
size_t data_size);
void crypto_mac_final(struct hmac_ctx *ctx, void *out_data,
size_t out_data_size);
int freebsd_crypt_newsession(freebsd_crypt_session_t *sessp,
struct zio_crypt_info *, crypto_key_t *);
void freebsd_crypt_freesession(freebsd_crypt_session_t *sessp);
int freebsd_crypt_uio(boolean_t, freebsd_crypt_session_t *,
struct zio_crypt_info *, uio_t *, crypto_key_t *, uint8_t *,
size_t, size_t);
#endif /* _ZFS_FREEBSD_CRYPTO_H */
